Growth does not fix a badly designed business. It scales it, including the parts that were only holding together because volume was low.
Structure is the limiting factor
Every business has an operating design, whether or not anyone chose it: who decides what, where information lives, how work moves and what happens when something goes wrong. At low volume, informality works. At higher volume, informality becomes cost.
What growth multiplies
More customers means more exceptions. More staff means more handovers. More products means more variation. Each of those is fine in a business designed for it, and expensive in one that is not.
The order that works
Diagnose, simplify, structure, then automate. Doing that before the next growth push is far cheaper than unpicking it afterwards, and it is the difference between capacity that scales and effort that scales.